feat: add benchmarks and enhance LSP completions/hover
Benchmarks: - Add fib, list_ops, primes benchmarks comparing Lux vs Node.js vs Rust - Lux matches Rust performance and is 8-30x faster than Node.js - Add docs/benchmarks.md documenting results LSP improvements: - Context-aware completions (module access vs general) - Add List, String, Option, Result, Console, Math method completions - Add type and builtin completions - Hover now shows type signatures and documentation for known symbols - Hover returns formatted markdown with code blocks Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
383
src/lsp.rs
383
src/lsp.rs
@@ -212,88 +212,289 @@ impl LspServer {
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fn handle_hover(&self, params: HoverParams) -> Option<Hover> {
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let uri = params.text_document_position_params.text_document.uri;
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let _position = params.text_document_position_params.position;
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let position = params.text_document_position_params.position;
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let _source = self.documents.get(&uri)?;
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let source = self.documents.get(&uri)?;
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// For now, return basic hover info
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// A full implementation would find the symbol at the position
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// and return its type and documentation
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Some(Hover {
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contents: HoverContents::Markup(MarkupContent {
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kind: MarkupKind::Markdown,
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value: "Lux language element".to_string(),
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}),
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range: None,
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})
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// Extract the word at the cursor position
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let word = self.get_word_at_position(source, position)?;
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// Look up documentation for known symbols
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let info = self.get_symbol_info(&word);
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if let Some((signature, doc)) = info {
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Some(Hover {
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contents: HoverContents::Markup(MarkupContent {
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kind: MarkupKind::Markdown,
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value: format!("```lux\n{}\n```\n\n{}", signature, doc),
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}),
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range: None,
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})
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} else {
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// Return generic info for unknown symbols
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None
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}
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}
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fn get_word_at_position(&self, source: &str, position: Position) -> Option<String> {
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let lines: Vec<&str> = source.lines().collect();
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let line = lines.get(position.line as usize)?;
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let col = position.character as usize;
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// Find word boundaries
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let start = line[..col.min(line.len())]
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.rfind(|c: char| !c.is_alphanumeric() && c != '_')
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.map(|i| i + 1)
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.unwrap_or(0);
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let end = line[col.min(line.len())..]
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.find(|c: char| !c.is_alphanumeric() && c != '_')
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.map(|i| col + i)
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.unwrap_or(line.len());
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if start < end {
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Some(line[start..end].to_string())
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} else {
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None
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}
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}
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fn get_symbol_info(&self, word: &str) -> Option<(&'static str, &'static str)> {
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match word {
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// Keywords
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"fn" => Some(("fn name(params): ReturnType = body", "Declare a function")),
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"let" => Some(("let name = value", "Bind a value to a name")),
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"if" => Some(("if condition then expr else expr", "Conditional expression")),
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"match" => Some(("match value { pattern => expr, ... }", "Pattern matching")),
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"type" => Some(("type Name = TypeExpr", "Define a type alias or ADT")),
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"effect" => Some(("effect Name { fn op(): Type }", "Define an effect")),
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"handler" => Some(("handler { op() => impl }", "Handle effects")),
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"trait" => Some(("trait Name { fn method(): Type }", "Define a trait")),
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"impl" => Some(("impl Trait for Type { ... }", "Implement a trait")),
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// List functions
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"map" => Some(("List.map(list: List<A>, f: A -> B): List<B>", "Transform each element in a list")),
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"filter" => Some(("List.filter(list: List<A>, p: A -> Bool): List<A>", "Keep elements matching predicate")),
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"fold" => Some(("List.fold(list: List<A>, init: B, f: (B, A) -> B): B", "Reduce list to single value")),
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"reverse" => Some(("List.reverse(list: List<A>): List<A>", "Reverse a list")),
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"concat" => Some(("List.concat(a: List<A>, b: List<A>): List<A>", "Concatenate two lists")),
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"range" => Some(("List.range(start: Int, end: Int): List<Int>", "Create a list from start to end-1")),
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"length" => Some(("List.length(list: List<A>): Int", "Get the length of a list")),
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"head" => Some(("List.head(list: List<A>): Option<A>", "Get the first element")),
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"tail" => Some(("List.tail(list: List<A>): List<A>", "Get all elements except the first")),
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"isEmpty" => Some(("List.isEmpty(list: List<A>): Bool", "Check if list is empty")),
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// Option/Result
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"Some" => Some(("Some(value: A): Option<A>", "Wrap a value in Some")),
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"None" => Some(("None: Option<A>", "The empty Option")),
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"Ok" => Some(("Ok(value: A): Result<A, E>", "Successful result")),
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"Err" => Some(("Err(error: E): Result<A, E>", "Error result")),
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"isSome" => Some(("Option.isSome(opt: Option<A>): Bool", "Check if Option has a value")),
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"isNone" => Some(("Option.isNone(opt: Option<A>): Bool", "Check if Option is empty")),
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"getOrElse" => Some(("Option.getOrElse(opt: Option<A>, default: A): A", "Get value or default")),
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// Console
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"print" => Some(("Console.print(msg: String): Unit", "Print a message to the console")),
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"readLine" => Some(("Console.readLine(): String", "Read a line from input")),
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"readInt" => Some(("Console.readInt(): Int", "Read an integer from input")),
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// Types
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"Int" => Some(("type Int", "64-bit signed integer")),
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"Float" => Some(("type Float", "64-bit floating point number")),
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"Bool" => Some(("type Bool", "Boolean (true or false)")),
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"String" => Some(("type String", "UTF-8 string")),
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"Unit" => Some(("type Unit", "Unit type (no value)")),
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"List" => Some(("type List<A>", "Generic list/array type")),
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"Option" => Some(("type Option<A> = Some(A) | None", "Optional value (Some or None)")),
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"Result" => Some(("type Result<A, E> = Ok(A) | Err(E)", "Result of fallible operation")),
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// Built-in functions
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"toString" => Some(("toString(value: A): String", "Convert any value to a string")),
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_ => None,
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}
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}
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fn handle_completion(&self, params: CompletionParams) -> Option<CompletionResponse> {
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let _uri = params.text_document_position.text_document.uri;
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let uri = params.text_document_position.text_document.uri;
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let position = params.text_document_position.position;
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// Return basic completions
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// A full implementation would analyze context and provide
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// relevant completions based on scope
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let items = vec![
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CompletionItem {
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label: "fn".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Function declaration".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "let".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Variable binding".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "if".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Conditional expression".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "match".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Pattern matching".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "type".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Type declaration".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "effect".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Effect declaration".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "handler".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Effect handler".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "trait".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Trait declaration".to_string()),
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..Default::default()
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},
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CompletionItem {
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label: "impl".to_string(),
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kind: Some(CompletionItemKind::KEYWORD),
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detail: Some("Trait implementation".to_string()),
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..Default::default()
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},
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];
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// Check context to provide relevant completions
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let source = self.documents.get(&uri)?;
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let trigger_context = self.get_completion_context(source, position);
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let mut items = Vec::new();
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// If triggered after a dot, provide module/method completions
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if trigger_context == CompletionContext::ModuleAccess {
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// Add List module functions
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items.extend(self.get_list_completions());
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// Add String module functions
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items.extend(self.get_string_completions());
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// Add Option/Result completions
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items.extend(self.get_option_result_completions());
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// Add Console functions
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items.extend(self.get_console_completions());
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// Add Math functions
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items.extend(self.get_math_completions());
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} else {
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// General completions (keywords + common functions)
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items.extend(self.get_keyword_completions());
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items.extend(self.get_builtin_completions());
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items.extend(self.get_type_completions());
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}
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Some(CompletionResponse::Array(items))
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}
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fn get_completion_context(&self, source: &str, position: Position) -> CompletionContext {
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// Find the character before the cursor
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let offset = self.position_to_offset(source, position);
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if offset > 0 {
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let prev_char = source.chars().nth(offset - 1);
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if prev_char == Some('.') {
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return CompletionContext::ModuleAccess;
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}
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}
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CompletionContext::General
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}
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fn position_to_offset(&self, source: &str, position: Position) -> usize {
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let mut offset = 0;
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let mut line = 0u32;
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for (i, c) in source.char_indices() {
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if line == position.line {
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let col = i - offset;
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return offset + (position.character as usize).min(col + 1);
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}
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if c == '\n' {
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line += 1;
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offset = i + 1;
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}
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}
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source.len()
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}
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fn get_keyword_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item("fn", CompletionItemKind::KEYWORD, "Function declaration"),
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completion_item("let", CompletionItemKind::KEYWORD, "Variable binding"),
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completion_item("if", CompletionItemKind::KEYWORD, "Conditional expression"),
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completion_item("then", CompletionItemKind::KEYWORD, "Then branch"),
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completion_item("else", CompletionItemKind::KEYWORD, "Else branch"),
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completion_item("match", CompletionItemKind::KEYWORD, "Pattern matching"),
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completion_item("type", CompletionItemKind::KEYWORD, "Type declaration"),
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completion_item("effect", CompletionItemKind::KEYWORD, "Effect declaration"),
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completion_item("handler", CompletionItemKind::KEYWORD, "Effect handler"),
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completion_item("trait", CompletionItemKind::KEYWORD, "Trait declaration"),
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completion_item("impl", CompletionItemKind::KEYWORD, "Trait implementation"),
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completion_item("import", CompletionItemKind::KEYWORD, "Import declaration"),
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completion_item("return", CompletionItemKind::KEYWORD, "Return from function"),
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completion_item("run", CompletionItemKind::KEYWORD, "Run effectful computation"),
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completion_item("with", CompletionItemKind::KEYWORD, "With handler"),
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completion_item("true", CompletionItemKind::KEYWORD, "Boolean true"),
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completion_item("false", CompletionItemKind::KEYWORD, "Boolean false"),
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]
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}
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fn get_builtin_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item("List", CompletionItemKind::MODULE, "List module"),
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completion_item("String", CompletionItemKind::MODULE, "String module"),
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completion_item("Console", CompletionItemKind::MODULE, "Console I/O"),
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completion_item("Math", CompletionItemKind::MODULE, "Math functions"),
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completion_item("Option", CompletionItemKind::MODULE, "Option type"),
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completion_item("Result", CompletionItemKind::MODULE, "Result type"),
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completion_item("Some", CompletionItemKind::CONSTRUCTOR, "Option.Some constructor"),
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completion_item("None", CompletionItemKind::CONSTRUCTOR, "Option.None constructor"),
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completion_item("Ok", CompletionItemKind::CONSTRUCTOR, "Result.Ok constructor"),
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completion_item("Err", CompletionItemKind::CONSTRUCTOR, "Result.Err constructor"),
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completion_item("toString", CompletionItemKind::FUNCTION, "Convert value to string"),
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]
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}
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fn get_type_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item("Int", CompletionItemKind::TYPE_PARAMETER, "Integer type"),
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completion_item("Float", CompletionItemKind::TYPE_PARAMETER, "Floating point type"),
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completion_item("Bool", CompletionItemKind::TYPE_PARAMETER, "Boolean type"),
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completion_item("String", CompletionItemKind::TYPE_PARAMETER, "String type"),
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completion_item("Unit", CompletionItemKind::TYPE_PARAMETER, "Unit type"),
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completion_item("List", CompletionItemKind::TYPE_PARAMETER, "List type"),
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completion_item("Option", CompletionItemKind::TYPE_PARAMETER, "Option type"),
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completion_item("Result", CompletionItemKind::TYPE_PARAMETER, "Result type"),
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]
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}
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fn get_list_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item_with_doc("length", CompletionItemKind::METHOD, "List.length(list)", "Get the length of a list"),
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completion_item_with_doc("head", CompletionItemKind::METHOD, "List.head(list)", "Get first element (returns Option)"),
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completion_item_with_doc("tail", CompletionItemKind::METHOD, "List.tail(list)", "Get all but first element"),
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completion_item_with_doc("map", CompletionItemKind::METHOD, "List.map(list, fn)", "Transform each element"),
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completion_item_with_doc("filter", CompletionItemKind::METHOD, "List.filter(list, predicate)", "Keep elements matching predicate"),
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completion_item_with_doc("fold", CompletionItemKind::METHOD, "List.fold(list, init, fn)", "Reduce list to single value"),
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completion_item_with_doc("reverse", CompletionItemKind::METHOD, "List.reverse(list)", "Reverse list order"),
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completion_item_with_doc("concat", CompletionItemKind::METHOD, "List.concat(a, b)", "Concatenate two lists"),
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completion_item_with_doc("range", CompletionItemKind::METHOD, "List.range(start, end)", "Create list from range"),
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completion_item_with_doc("get", CompletionItemKind::METHOD, "List.get(list, index)", "Get element at index (returns Option)"),
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completion_item_with_doc("find", CompletionItemKind::METHOD, "List.find(list, predicate)", "Find first matching element"),
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completion_item_with_doc("isEmpty", CompletionItemKind::METHOD, "List.isEmpty(list)", "Check if list is empty"),
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completion_item_with_doc("take", CompletionItemKind::METHOD, "List.take(list, n)", "Take first n elements"),
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completion_item_with_doc("drop", CompletionItemKind::METHOD, "List.drop(list, n)", "Drop first n elements"),
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completion_item_with_doc("any", CompletionItemKind::METHOD, "List.any(list, predicate)", "Check if any element matches"),
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completion_item_with_doc("all", CompletionItemKind::METHOD, "List.all(list, predicate)", "Check if all elements match"),
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]
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}
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fn get_string_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item_with_doc("length", CompletionItemKind::METHOD, "String.length(s)", "Get string length"),
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completion_item_with_doc("split", CompletionItemKind::METHOD, "String.split(s, delimiter)", "Split string by delimiter"),
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completion_item_with_doc("join", CompletionItemKind::METHOD, "String.join(list, delimiter)", "Join strings with delimiter"),
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completion_item_with_doc("trim", CompletionItemKind::METHOD, "String.trim(s)", "Remove leading/trailing whitespace"),
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completion_item_with_doc("contains", CompletionItemKind::METHOD, "String.contains(s, substr)", "Check if contains substring"),
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completion_item_with_doc("replace", CompletionItemKind::METHOD, "String.replace(s, from, to)", "Replace occurrences"),
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completion_item_with_doc("chars", CompletionItemKind::METHOD, "String.chars(s)", "Get list of characters"),
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completion_item_with_doc("lines", CompletionItemKind::METHOD, "String.lines(s)", "Split into lines"),
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completion_item_with_doc("fromChar", CompletionItemKind::METHOD, "String.fromChar(c)", "Convert char to string"),
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]
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}
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fn get_option_result_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item_with_doc("isSome", CompletionItemKind::METHOD, "Option.isSome(opt)", "Check if Option has value"),
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completion_item_with_doc("isNone", CompletionItemKind::METHOD, "Option.isNone(opt)", "Check if Option is empty"),
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completion_item_with_doc("getOrElse", CompletionItemKind::METHOD, "Option.getOrElse(opt, default)", "Get value or default"),
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completion_item_with_doc("map", CompletionItemKind::METHOD, "Option.map(opt, fn)", "Transform value if present"),
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completion_item_with_doc("flatMap", CompletionItemKind::METHOD, "Option.flatMap(opt, fn)", "Chain Option operations"),
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completion_item_with_doc("isOk", CompletionItemKind::METHOD, "Result.isOk(result)", "Check if Result is Ok"),
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completion_item_with_doc("isErr", CompletionItemKind::METHOD, "Result.isErr(result)", "Check if Result is Err"),
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]
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}
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fn get_console_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item_with_doc("print", CompletionItemKind::METHOD, "Console.print(msg)", "Print to console"),
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completion_item_with_doc("readLine", CompletionItemKind::METHOD, "Console.readLine()", "Read line from input"),
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completion_item_with_doc("readInt", CompletionItemKind::METHOD, "Console.readInt()", "Read integer from input"),
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]
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}
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fn get_math_completions(&self) -> Vec<CompletionItem> {
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vec![
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completion_item_with_doc("abs", CompletionItemKind::METHOD, "Math.abs(n)", "Absolute value"),
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completion_item_with_doc("min", CompletionItemKind::METHOD, "Math.min(a, b)", "Minimum of two values"),
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completion_item_with_doc("max", CompletionItemKind::METHOD, "Math.max(a, b)", "Maximum of two values"),
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completion_item_with_doc("sqrt", CompletionItemKind::METHOD, "Math.sqrt(n)", "Square root"),
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completion_item_with_doc("pow", CompletionItemKind::METHOD, "Math.pow(base, exp)", "Power function"),
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completion_item_with_doc("floor", CompletionItemKind::METHOD, "Math.floor(n)", "Round down"),
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completion_item_with_doc("ceil", CompletionItemKind::METHOD, "Math.ceil(n)", "Round up"),
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completion_item_with_doc("round", CompletionItemKind::METHOD, "Math.round(n)", "Round to nearest"),
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]
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}
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fn handle_goto_definition(
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&self,
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_params: GotoDefinitionParams,
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@@ -350,3 +551,41 @@ where
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}
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}
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}
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/// Context for completion suggestions
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#[derive(PartialEq)]
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enum CompletionContext {
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/// After a dot (e.g., "List.")
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ModuleAccess,
|
||||
/// General context (keywords, types, etc.)
|
||||
General,
|
||||
}
|
||||
|
||||
/// Create a simple completion item
|
||||
fn completion_item(label: &str, kind: CompletionItemKind, detail: &str) -> CompletionItem {
|
||||
CompletionItem {
|
||||
label: label.to_string(),
|
||||
kind: Some(kind),
|
||||
detail: Some(detail.to_string()),
|
||||
..Default::default()
|
||||
}
|
||||
}
|
||||
|
||||
/// Create a completion item with documentation
|
||||
fn completion_item_with_doc(
|
||||
label: &str,
|
||||
kind: CompletionItemKind,
|
||||
signature: &str,
|
||||
doc: &str,
|
||||
) -> CompletionItem {
|
||||
CompletionItem {
|
||||
label: label.to_string(),
|
||||
kind: Some(kind),
|
||||
detail: Some(signature.to_string()),
|
||||
documentation: Some(lsp_types::Documentation::MarkupContent(MarkupContent {
|
||||
kind: MarkupKind::Markdown,
|
||||
value: doc.to_string(),
|
||||
})),
|
||||
..Default::default()
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user